ruby_block[supervise_redis_sleep] action run is blocking installation / reconfigure step

When I install gitlab_6.9.2-omnibus.1-1_amd64.deb for debian 7 the gitlab-ctl reconfigure step hangs on the supervise_redis_sleep step:

root@devtools:/var/log# gitlab-ctl reconfigure
Starting Chef Client, version 11.12.2
[2014-06-18T08:09:31-04:00] WARN: [inet6] no ip address on venet0
Compiling Cookbooks...
Recipe: gitlab::default
  * directory[/etc/gitlab] action create (up to date)
[2014-06-18T08:09:31-04:00] WARN: Cloning resource attributes for directory[/var/opt/gitlab/gitlab-rails/etc] from prior resource (CHEF-3694)
[2014-06-18T08:09:31-04:00] WARN: Previous directory[/var/opt/gitlab/gitlab-rails/etc]: /opt/gitlab/embedded/cookbooks/gitlab/recipes/gitlab-rails.rb:36:in `block in from_file'
[2014-06-18T08:09:31-04:00] WARN: Current  directory[/var/opt/gitlab/gitlab-rails/etc]: /opt/gitlab/embedded/cookbooks/gitlab/definitions/unicorn_config.rb:21:in `block in from_file'
[2014-06-18T08:09:31-04:00] WARN: Cloning resource attributes for service[unicorn] from prior resource (CHEF-3694)
[2014-06-18T08:09:31-04:00] WARN: Previous service[unicorn]: /opt/gitlab/embedded/cookbooks/gitlab/recipes/default.rb:58:in `block in from_file'
[2014-06-18T08:09:31-04:00] WARN: Current  service[unicorn]: /opt/gitlab/embedded/cookbooks/runit/definitions/runit_service.rb:173:in `block in from_file'
[2014-06-18T08:09:31-04:00] WARN: Cloning resource attributes for service[sidekiq] from prior resource (CHEF-3694)
[2014-06-18T08:09:31-04:00] WARN: Previous service[sidekiq]: /opt/gitlab/embedded/cookbooks/gitlab/recipes/default.rb:58:in `block in from_file'
[2014-06-18T08:09:31-04:00] WARN: Current  service[sidekiq]: /opt/gitlab/embedded/cookbooks/runit/definitions/runit_service.rb:173:in `block in from_file'
Converging 131 resources
  * directory[/etc/gitlab] action nothing (skipped due to action :nothing)
  * directory[/var/opt/gitlab] action create (up to date)
Recipe: gitlab::users
  * group[git] action create (up to date)
  * user[git] action create (up to date)
  * template[/var/opt/gitlab/.gitconfig] action create (up to date)
Recipe: gitlab::gitlab-shell
  * directory[/var/opt/gitlab/git-data/repositories] action create (up to date)
  * directory[/var/opt/gitlab/.ssh] action create (up to date)
  * file[/var/opt/gitlab/.ssh/authorized_keys] action create (up to date)
  * file[/opt/gitlab/embedded/service/gitlab-shell/authorized_keys.lock] action create (up to date)
  * execute[chcon -t ssh_home_t /var/opt/gitlab/.ssh] action run (skipped due to only_if)
  * directory[/var/log/gitlab/gitlab-shell/] action create (up to date)
  * directory[/var/opt/gitlab/gitlab-shell] action create (up to date)
  * directory[/var/opt/gitlab/git-data] action create (up to date)
  * template[/var/opt/gitlab/gitlab-shell/config.yml] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-shell/config.yml] action create (up to date)
Recipe: gitlab::gitlab-rails
  * directory[/var/opt/gitlab/gitlab-rails] action create (up to date)
  * directory[/var/opt/gitlab/gitlab-rails/etc] action create (up to date)
  * directory[/var/opt/gitlab/gitlab-rails/working] action create (up to date)
  * directory[/var/opt/gitlab/gitlab-rails/tmp] action create (up to date)
  * directory[/var/opt/gitlab/gitlab-rails/uploads] action create (up to date)
  * directory[/var/opt/gitlab/backups] action create (up to date)
  * directory[/var/log/gitlab/gitlab-rails] action create (up to date)
  * template[/var/opt/gitlab/gitlab-rails/etc/secret] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/.secret] action create (up to date)
  * template[/var/opt/gitlab/gitlab-rails/etc/database.yml] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/config/database.yml] action create (up to date)
  * template[/var/opt/gitlab/gitlab-rails/etc/resque.yml] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/config/resque.yml] action create (up to date)
  * template[/var/opt/gitlab/gitlab-rails/etc/gitlab.yml] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/config/gitlab.yml] action create (up to date)
  * template[/var/opt/gitlab/gitlab-rails/etc/rack_attack.rb] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/config/initializers/rack_attack.rb] action create (up to date)
  * directory[/var/opt/gitlab/git-data/gitlab-satellites] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/tmp] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/public/uploads] action create (up to date)
  * link[/opt/gitlab/embedded/service/gitlab-rails/log] action create (up to date)
  * file[/opt/gitlab/embedded/service/gitlab-rails/db/schema.rb] action create (up to date)
  * remote_file[/var/opt/gitlab/gitlab-rails/VERSION] action create (up to date)
  * execute[chown -R git /opt/gitlab/embedded/service/gitlab-rails/public] action run
    - execute chown -R git /opt/gitlab/embedded/service/gitlab-rails/public

  * execute[clear the gitlab-rails cache] action nothing (skipped due to action :nothing)
Recipe: gitlab::default
  * service[unicorn] action nothing (up to date)
  * service[sidekiq] action nothing (up to date)
Recipe: runit::sysvinit
  * execute[echo 'CS:123456:respawn:/opt/gitlab/embedded/bin/runsvdir-start' >> /etc/inittab] action run (skipped due to not_if)
  * execute[init q] action nothing (skipped due to action :nothing)
Recipe: gitlab::redis
  * user[gitlab-redis] action create (up to date)
  * directory[/var/log/gitlab/redis] action create (up to date)
  * directory[/var/opt/gitlab/redis] action create (up to date)
  * template[/var/opt/gitlab/redis/redis.conf] action create (up to date)
  * directory[/opt/gitlab/sv/redis] action create (up to date)
  * directory[/opt/gitlab/sv/redis/log] action create (up to date)
  * directory[/opt/gitlab/sv/redis/log/main] action create (up to date)
  * template[/opt/gitlab/sv/redis/run] action create (up to date)
  * template[/opt/gitlab/sv/redis/log/run] action create (up to date)
  * file[/opt/gitlab/sv/redis/down] action delete (up to date)
  * link[/opt/gitlab/init/redis] action create (up to date)
  * link[/opt/gitlab/service/redis] action create (up to date)
  * ruby_block[supervise_redis_sleep] action run

The VM is running under proxmox (openvz):

root@devtools:~# uname -a
Linux devtools 2.6.32-26-pve #1 SMP Mon Oct 14 08:22:20 CEST 2013 x86_64 GNU/Linux

Other information:

root@devtools:~# /opt/gitlab/embedded/bin/ohai platform_family platform_version platform
[
  "debian"
]
[
  "7.5"
]
[
  "debian"
]